漢代災異說中，京房所代表的易學說，其學者人數與影響力僅次於春秋公羊災異說及洪範五行傳說。京房著作氏多有亡佚，但由史傳著錄與輯佚遺文考察，則存有二種形式：一與易理相近：一與災異相涉。學界京房易學之研究，主要聚焦於《京氏易傳》一書。本文則提出：如欲廓清兩漢京氏易說之面貌，應先由《漢書》所見資料分析，尋出脈絡，才免治絲益棼。故特著眼於〈五行志〉70餘例雜占，討論其文例。並以此檢證司馬彪以下對於京房說之著錄。認為：京房在災異區分與災異人事對應上，大致與漢儒相近。但其理論中涉及到多重災異相伴而生的解釋，則正反映出當時對於災異的時日占測需求，而此正是孟、京卦氣說之專精。由此可看出雜占與卦氣實為京房災異說之表裏。依文例檢視後世所載京房說，略可看出東漢至六朝間京房說漸為讖緯、其他占術所滲透，或將其易說轉化成為易緯；或託名京房造出雜占的痕跡。《隋志》所著錄20餘種京房著作，基本上即是這些大量新創、層累的京房說之集大成。

Jing Fang's study on the "Book of Change" is the third most important theory on disasters in the Han Dynasty. While many of his articles have been lost, the existent ones can be classified into two types: comments on the "Book of Changes" and theories on disasters. This article analyzes the styles of more than 70 entries in the "Records of the Five Elements," Book of Han", and traces later records of ling Fang and text divination.